ip
ipku.in

IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
private IP (RFC 1918)10.167.10.128/25
network10.167.10.128/25
broadcast10.167.10.255
first host10.167.10.129
last host10.167.10.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.10.128/25
address00001010.10100111.00001010.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.00001010.10000000
broadcast00001010.10100111.00001010.11111111
green = network part, grey = host part
hex0x0aa70a80
decimal178719360
reverse dns128.10.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:a80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.10.128/3210.167.10.128 – 10.167.10.12810.167.10.128
210.167.10.129/3210.167.10.129 – 10.167.10.12910.167.10.129
310.167.10.130/3210.167.10.130 – 10.167.10.13010.167.10.130
410.167.10.131/3210.167.10.131 – 10.167.10.13110.167.10.131
510.167.10.132/3210.167.10.132 – 10.167.10.13210.167.10.132
610.167.10.133/3210.167.10.133 – 10.167.10.13310.167.10.133
710.167.10.134/3210.167.10.134 – 10.167.10.13410.167.10.134
810.167.10.135/3210.167.10.135 – 10.167.10.13510.167.10.135
910.167.10.136/3210.167.10.136 – 10.167.10.13610.167.10.136
1010.167.10.137/3210.167.10.137 – 10.167.10.13710.167.10.137
1110.167.10.138/3210.167.10.138 – 10.167.10.13810.167.10.138
1210.167.10.139/3210.167.10.139 – 10.167.10.13910.167.10.139
1310.167.10.140/3210.167.10.140 – 10.167.10.14010.167.10.140
1410.167.10.141/3210.167.10.141 – 10.167.10.14110.167.10.141
1510.167.10.142/3210.167.10.142 – 10.167.10.14210.167.10.142
1610.167.10.143/3210.167.10.143 – 10.167.10.14310.167.10.143
1710.167.10.144/3210.167.10.144 – 10.167.10.14410.167.10.144
1810.167.10.145/3210.167.10.145 – 10.167.10.14510.167.10.145
1910.167.10.146/3210.167.10.146 – 10.167.10.14610.167.10.146
2010.167.10.147/3210.167.10.147 – 10.167.10.14710.167.10.147
2110.167.10.148/3210.167.10.148 – 10.167.10.14810.167.10.148
2210.167.10.149/3210.167.10.149 – 10.167.10.14910.167.10.149
2310.167.10.150/3210.167.10.150 – 10.167.10.15010.167.10.150
2410.167.10.151/3210.167.10.151 – 10.167.10.15110.167.10.151
2510.167.10.152/3210.167.10.152 – 10.167.10.15210.167.10.152
2610.167.10.153/3210.167.10.153 – 10.167.10.15310.167.10.153
2710.167.10.154/3210.167.10.154 – 10.167.10.15410.167.10.154
2810.167.10.155/3210.167.10.155 – 10.167.10.15510.167.10.155
2910.167.10.156/3210.167.10.156 – 10.167.10.15610.167.10.156
3010.167.10.157/3210.167.10.157 – 10.167.10.15710.167.10.157
3110.167.10.158/3210.167.10.158 – 10.167.10.15810.167.10.158
3210.167.10.159/3210.167.10.159 – 10.167.10.15910.167.10.159
3310.167.10.160/3210.167.10.160 – 10.167.10.16010.167.10.160
3410.167.10.161/3210.167.10.161 – 10.167.10.16110.167.10.161
3510.167.10.162/3210.167.10.162 – 10.167.10.16210.167.10.162
3610.167.10.163/3210.167.10.163 – 10.167.10.16310.167.10.163
3710.167.10.164/3210.167.10.164 – 10.167.10.16410.167.10.164
3810.167.10.165/3210.167.10.165 – 10.167.10.16510.167.10.165
3910.167.10.166/3210.167.10.166 – 10.167.10.16610.167.10.166
4010.167.10.167/3210.167.10.167 – 10.167.10.16710.167.10.167
4110.167.10.168/3210.167.10.168 – 10.167.10.16810.167.10.168
4210.167.10.169/3210.167.10.169 – 10.167.10.16910.167.10.169
4310.167.10.170/3210.167.10.170 – 10.167.10.17010.167.10.170
4410.167.10.171/3210.167.10.171 – 10.167.10.17110.167.10.171
4510.167.10.172/3210.167.10.172 – 10.167.10.17210.167.10.172
4610.167.10.173/3210.167.10.173 – 10.167.10.17310.167.10.173
4710.167.10.174/3210.167.10.174 – 10.167.10.17410.167.10.174
4810.167.10.175/3210.167.10.175 – 10.167.10.17510.167.10.175
4910.167.10.176/3210.167.10.176 – 10.167.10.17610.167.10.176
5010.167.10.177/3210.167.10.177 – 10.167.10.17710.167.10.177
5110.167.10.178/3210.167.10.178 – 10.167.10.17810.167.10.178
5210.167.10.179/3210.167.10.179 – 10.167.10.17910.167.10.179
5310.167.10.180/3210.167.10.180 – 10.167.10.18010.167.10.180
5410.167.10.181/3210.167.10.181 – 10.167.10.18110.167.10.181
5510.167.10.182/3210.167.10.182 – 10.167.10.18210.167.10.182
5610.167.10.183/3210.167.10.183 – 10.167.10.18310.167.10.183
5710.167.10.184/3210.167.10.184 – 10.167.10.18410.167.10.184
5810.167.10.185/3210.167.10.185 – 10.167.10.18510.167.10.185
5910.167.10.186/3210.167.10.186 – 10.167.10.18610.167.10.186
6010.167.10.187/3210.167.10.187 – 10.167.10.18710.167.10.187
6110.167.10.188/3210.167.10.188 – 10.167.10.18810.167.10.188
6210.167.10.189/3210.167.10.189 – 10.167.10.18910.167.10.189
6310.167.10.190/3210.167.10.190 – 10.167.10.19010.167.10.190
6410.167.10.191/3210.167.10.191 – 10.167.10.19110.167.10.191
6510.167.10.192/3210.167.10.192 – 10.167.10.19210.167.10.192
6610.167.10.193/3210.167.10.193 – 10.167.10.19310.167.10.193
6710.167.10.194/3210.167.10.194 – 10.167.10.19410.167.10.194
6810.167.10.195/3210.167.10.195 – 10.167.10.19510.167.10.195
6910.167.10.196/3210.167.10.196 – 10.167.10.19610.167.10.196
7010.167.10.197/3210.167.10.197 – 10.167.10.19710.167.10.197
7110.167.10.198/3210.167.10.198 – 10.167.10.19810.167.10.198
7210.167.10.199/3210.167.10.199 – 10.167.10.19910.167.10.199
7310.167.10.200/3210.167.10.200 – 10.167.10.20010.167.10.200
7410.167.10.201/3210.167.10.201 – 10.167.10.20110.167.10.201
7510.167.10.202/3210.167.10.202 – 10.167.10.20210.167.10.202
7610.167.10.203/3210.167.10.203 – 10.167.10.20310.167.10.203
7710.167.10.204/3210.167.10.204 – 10.167.10.20410.167.10.204
7810.167.10.205/3210.167.10.205 – 10.167.10.20510.167.10.205
7910.167.10.206/3210.167.10.206 – 10.167.10.20610.167.10.206
8010.167.10.207/3210.167.10.207 – 10.167.10.20710.167.10.207
8110.167.10.208/3210.167.10.208 – 10.167.10.20810.167.10.208
8210.167.10.209/3210.167.10.209 – 10.167.10.20910.167.10.209
8310.167.10.210/3210.167.10.210 – 10.167.10.21010.167.10.210
8410.167.10.211/3210.167.10.211 – 10.167.10.21110.167.10.211
8510.167.10.212/3210.167.10.212 – 10.167.10.21210.167.10.212
8610.167.10.213/3210.167.10.213 – 10.167.10.21310.167.10.213
8710.167.10.214/3210.167.10.214 – 10.167.10.21410.167.10.214
8810.167.10.215/3210.167.10.215 – 10.167.10.21510.167.10.215
8910.167.10.216/3210.167.10.216 – 10.167.10.21610.167.10.216
9010.167.10.217/3210.167.10.217 – 10.167.10.21710.167.10.217
9110.167.10.218/3210.167.10.218 – 10.167.10.21810.167.10.218
9210.167.10.219/3210.167.10.219 – 10.167.10.21910.167.10.219
9310.167.10.220/3210.167.10.220 – 10.167.10.22010.167.10.220
9410.167.10.221/3210.167.10.221 – 10.167.10.22110.167.10.221
9510.167.10.222/3210.167.10.222 – 10.167.10.22210.167.10.222
9610.167.10.223/3210.167.10.223 – 10.167.10.22310.167.10.223
9710.167.10.224/3210.167.10.224 – 10.167.10.22410.167.10.224
9810.167.10.225/3210.167.10.225 – 10.167.10.22510.167.10.225
9910.167.10.226/3210.167.10.226 – 10.167.10.22610.167.10.226
10010.167.10.227/3210.167.10.227 – 10.167.10.22710.167.10.227
10110.167.10.228/3210.167.10.228 – 10.167.10.22810.167.10.228
10210.167.10.229/3210.167.10.229 – 10.167.10.22910.167.10.229
10310.167.10.230/3210.167.10.230 – 10.167.10.23010.167.10.230
10410.167.10.231/3210.167.10.231 – 10.167.10.23110.167.10.231
10510.167.10.232/3210.167.10.232 – 10.167.10.23210.167.10.232
10610.167.10.233/3210.167.10.233 – 10.167.10.23310.167.10.233
10710.167.10.234/3210.167.10.234 – 10.167.10.23410.167.10.234
10810.167.10.235/3210.167.10.235 – 10.167.10.23510.167.10.235
10910.167.10.236/3210.167.10.236 – 10.167.10.23610.167.10.236
11010.167.10.237/3210.167.10.237 – 10.167.10.23710.167.10.237
11110.167.10.238/3210.167.10.238 – 10.167.10.23810.167.10.238
11210.167.10.239/3210.167.10.239 – 10.167.10.23910.167.10.239
11310.167.10.240/3210.167.10.240 – 10.167.10.24010.167.10.240
11410.167.10.241/3210.167.10.241 – 10.167.10.24110.167.10.241
11510.167.10.242/3210.167.10.242 – 10.167.10.24210.167.10.242
11610.167.10.243/3210.167.10.243 – 10.167.10.24310.167.10.243
11710.167.10.244/3210.167.10.244 – 10.167.10.24410.167.10.244
11810.167.10.245/3210.167.10.245 – 10.167.10.24510.167.10.245
11910.167.10.246/3210.167.10.246 – 10.167.10.24610.167.10.246
12010.167.10.247/3210.167.10.247 – 10.167.10.24710.167.10.247
12110.167.10.248/3210.167.10.248 – 10.167.10.24810.167.10.248
12210.167.10.249/3210.167.10.249 – 10.167.10.24910.167.10.249
12310.167.10.250/3210.167.10.250 – 10.167.10.25010.167.10.250
12410.167.10.251/3210.167.10.251 – 10.167.10.25110.167.10.251
12510.167.10.252/3210.167.10.252 – 10.167.10.25210.167.10.252
12610.167.10.253/3210.167.10.253 – 10.167.10.25310.167.10.253
12710.167.10.254/3210.167.10.254 – 10.167.10.25410.167.10.254
12810.167.10.255/3210.167.10.255 – 10.167.10.25510.167.10.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /25
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.0512510-
/24255.255.255.0256254-
/25255.255.255.1281281261
/26255.255.255.19264622 split →
/27255.255.255.22432304 split →
/28255.255.255.24016148 split →
/29255.255.255.2488616 split →
/30255.255.255.2524232 split →
/31255.255.255.2542264 split →
/32255.255.255.25511128 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →